Drinker of Sorrow and combat damage

[Infinitium]

If I control a Drinker of Sorrow and my opponent blocks it with a 3/X creature will I be able to sacrifice DoS to its own ability before state based effects are checked and it dies from the combat damage?

[Julian23]

If I control a Drinker of Sorrow and my opponent blocks it with a 3/X creature will I be able to sacrifice DoS to its own ability before state based effects are checked and it dies from the combat damage?

No, you won't.

[Infinitium]

Got rules passage? I assume that damage is dealt, the ability is put on the stack and it then checks SBE?

[luma]

In the combat damage step, first combat damage is assigned and dealt. When Drinker deals damage, its ability triggers. Then state-based actions are checked, and Drinker is destroyed because of lethal damage. Then the triggered ability is put on the stack.

115.5. Each time a player would get priority, the game first performs all applicable state-based actions as a single event (see rule 704, “State-Based Actions”), then repeats this process until no state-based
actions are performed. Then triggered abilities are put on the stack (see rule 603, “Handling Triggered Abilities”). These steps repeat in order until no further state-based actions are performed and no abilities trigger. Then the player who would have received priority does so.

[Infinitium]

k, thanks